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doc: fix a typo
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362 changes: 362 additions & 0 deletions doc/source/reference/commands/object_inspect.rst
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.. -*- rst -*-
.. highlightlang:: none

.. groonga-command
.. database: commands_object_inspect
``object_inspect``
==================

Summary
-------

.. versionadded:: 6.0.0

``object_inspect`` inspects an object. You can confirm details of an
object.

For example:

* If the object is a table, you can confirm the number of records in
the table.

* If the object is a column, you can confirm the type of value of
the column.

Syntax
------

This command takes only one optional parameter::

object_inspect [name=null]

Usage
-----

You can inspect an object in the database specified by ``name``:

.. groonga-command
.. include:: ../../example/reference/commands/object_inspect/usage-name.log
.. table_create Users TABLE_HASH_KEY ShortText
.. load --table Users
.. [
.. {"_key": "Alice"}
.. ]
.. object_inspect Users
The ``object_inspect Users`` returns the following information:

* The name of the table: ``"name": Users``

* The total used key size: ``"key": {"total_size": 5}``
(``"Alice"`` is 5 byte data)

* The maximum total key size: ``"key": {"max_total_size": 4294967295}``

* and so on.

You can inspect the database by not specifying ``name``:

.. groonga-command
.. include:: ../../example/reference/commands/object_inspect/usage-database.log
.. object_inspect
The ``object_inspect`` returns the following information:

* The table type for object name management:
``"key": {"type": {"name": "table:dat_key"}}``

* and so on.

Parameters
----------

This section describes all parameters.

Required parameters
^^^^^^^^^^^^^^^^^^^

There is no optional parameter.

Optional parameters
^^^^^^^^^^^^^^^^^^^

There is only one optional parameters.

.. _object-inspect-name:

``name``
""""""""

Specifies the object name to be inspected.

If ``name`` isn't specified, the database is inspected.

Return value
------------

The command returns an object (nested key and value pairs) that
includes details of the object (such as table) as body::

[HEADER, object]

See :doc:`/reference/command/output_format` for ``HEADER``.

The format of the details is depends on object type. For example,
table has key information but function doesn't have key information.

.. _object-inspect-return-value-database:

Database
^^^^^^^^

Database inspection returns the following information::

{
"type": {
"id": DATABASE_TYPE_ID,
"name": DATABASE_TYPE_NAME
},
"keys": OBJECT_NAME_MANAGEMENT_TABLE
}

.. _object-inspect-return-value-database-type-id:

``DATABASE_TYPE_ID``
""""""""""""""""""""

``DATABASE_TYPE_ID`` is always ``55``.

.. _object-inspect-return-value-database-type-name:

``DATABASE_TYPE_NAME``
""""""""""""""""""""""

``DATABASE_TYPE_NAME`` is always ``"db"``.

.. _object-inspect-return-value-database-object-name-management-table:

``OBJECT_NAME_MANAGEMENT_TABLE``
""""""""""""""""""""""""""""""""

``OBJECT_NAME_MANAGEMENT_TABLE`` is :ref:`table-pat-key` or
:ref:`table-dat-key`. Normally, it's :ref:`table-dat-key`.

See :ref:`object-inspect-return-value-table` for format details.

.. _object-inspect-return-value-table:

Table
^^^^^

Table inspection returns the following information::

{
"name": TABLE_NAME,
"type": {
"id": TABLE_TYPE_ID,
"name": TABLE_TYPE_NAME
},
"key": {
"type": TABLE_KEY_TYPE,
"total_size": TABLE_KEY_TOTAL_SIZE
"max_total_size": TABLE_KEY_MAX_TOTAL_SIZE
}
}

There are some exceptions:

* :ref:`table-no-key` doesn't return key information because it
doesn't have key.

* :ref:`table-dat-key` doesn't return value information because it
doesn't have value.

.. _object-inspect-return-value-table-name:

``TABLE_NAME``
""""""""""""""

The name of the inspected table.

.. _object-inspect-return-value-table-type-id:

``TABLE_TYPE_ID``
"""""""""""""""""

The type ID of the inspected table.

Here are list of type IDs:

.. list-table::
:header-rows: 1

* - Table type
- ID
* - :ref:`table-hash-key`
- ``48``
* - :ref:`table-pat-key`
- ``49``
* - :ref:`table-dat-key`
- ``50``
* - :ref:`table-no-key`
- ``51``

.. _object-inspect-return-value-table-type-name:

``TABLE_TYPE_NAME``
"""""""""""""""""""

The type name of the inspected table.

Here are list of type names:

.. list-table::
:header-rows: 1

* - Table type
- name
* - :ref:`table-hash-key`
- ``"table:hash_key``
* - :ref:`table-pat-key`
- ``"table:pat_key``
* - :ref:`table-dat-key`
- ``"table:dat_key``
* - :ref:`table-no-key`
- ``"table:no_key``

.. _object-inspect-return-value-table-key-type:

``TABLE_KEY_TYPE``
""""""""""""""""""

The type of key of the inspected table.

See :ref:`object-inspect-return-value-type` for format details.

.. _object-inspect-return-value-table-total-key-size:

``TABLE_KEY_TOTAL_SIZE``
""""""""""""""""""""""""

The total key size of the inspected table in bytes.

.. _object-inspect-return-value-table-max-total-key-size:

``TABLE_KEY_MAX_TOTAL_SIZE``
""""""""""""""""""""""""""""

The maximum total key size of the inspected table in bytes.

.. _object-inspect-return-value-type:

Type
""""

Type inspection returns the following information::

{
"id": TYPE_ID,
"name": TYPE_NAME,
"type": {
"id": TYPE_ID_OF_TYPE,
"name": TYPE_NAME_OF_TYPE
},
"size": TYPE_SIZE
}

.. _object-inspect-return-value-type-id:

``TYPE_ID``
"""""""""""

The ID of the inspected type.

Here are ID list of builtin types:

.. list-table::
:header-rows: 1

* - Type
- ID
* - :ref:`builtin-type-bool`
- ``3``
* - :ref:`builtin-type-int8`
- ``4``
* - :ref:`builtin-type-uint8`
- ``5``
* - :ref:`builtin-type-int16`
- ``6``
* - :ref:`builtin-type-uint16`
- ``7``
* - :ref:`builtin-type-int32`
- ``8``
* - :ref:`builtin-type-uint32`
- ``9``
* - :ref:`builtin-type-int64`
- ``10``
* - :ref:`builtin-type-uint64`
- ``11``
* - :ref:`builtin-type-float`
- ``12``
* - :ref:`builtin-type-time`
- ``13``
* - :ref:`builtin-type-short-text`
- ``14``
* - :ref:`builtin-type-text`
- ``15``
* - :ref:`builtin-type-long-text`
- ``16``
* - :ref:`builtin-type-tokyo-geo-point`
- ``17``
* - :ref:`builtin-type-wgs84-geo-point`
- ``18``

.. _object-inspect-return-value-type-name:

``TYPE_NAME``
"""""""""""""

The name of the inspected type.

Here are name list of builtin types:

* :ref:`builtin-type-bool`
* :ref:`builtin-type-int8`
* :ref:`builtin-type-uint8`
* :ref:`builtin-type-int16`
* :ref:`builtin-type-uint16`
* :ref:`builtin-type-int32`
* :ref:`builtin-type-uint32`
* :ref:`builtin-type-int64`
* :ref:`builtin-type-uint64`
* :ref:`builtin-type-float`
* :ref:`builtin-type-time`
* :ref:`builtin-type-short-text`
* :ref:`builtin-type-text`
* :ref:`builtin-type-long-text`
* :ref:`builtin-type-tokyo-geo-point`
* :ref:`builtin-type-wgs84-geo-point`

.. _object-inspect-return-value-type-id-of-type:

``TYPE_ID_OF_TYPE``
"""""""""""""""""""

``TYPE_ID_OF_TYPE`` is always ``32``.

.. _object-inspect-return-value-type-name-of-type:

``TYPE_NAME_OF_TYPE``
"""""""""""""""""""""

``TYPE_NAME_OF_TYPE`` is always ``type``.

.. _object-inspect-return-value-type-size:

``TYPE_SIZE``
"""""""""""""

``TYPE_SIZE`` is the size of the inspected type in bytes. If the
inspected type is variable size type, the size means the maximum size.
2 changes: 1 addition & 1 deletion doc/source/reference/types.rst
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Expand Up @@ -145,7 +145,7 @@ String of 2,147,483,647 or less bytes. (default: "")

測地系の詳細については、 `測地系 - Wikipedia <http://ja.wikipedia.org/wiki/%E6%B8%AC%E5%9C%B0%E7%B3%BB>`_ を参照してください。

.. _builtin-type-wgs84-geo-pointer:
.. _builtin-type-wgs84-geo-point:

``WGS84GeoPoint``
^^^^^^^^^^^^^^^^^
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